What you can do to reliably induce misfire codes is pull the acoustic cover off while the engine is running. And look on both banks for the coils that sit on top of the spark plugs. They are circled in yellow in the pic below. PhotoCred to BES335xi from n54 injector swap diy. You can lift up on the locking tab on the side where you see the wires going into the coil and this will stop the spark plugs from firing in that particular cylinder giving you misfire codes AKA replace injector codes. Do this while the engine is running 1 at a time on as many cylinders as you can. You will have enough codes to get all injectors replaced.
